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Finding the Fourth Proportional to 836,820.80, 1,255,231.20 and 804,161.60

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Solution

The fourth proportional to 836,820.80, 1,255,231.20 and 804,161.60 is: 1,206,242.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,820.80 : 1,255,231.20 = 804,161.60 : x
  2. Step 2: Convert to fraction form
    836,820.80/1,255,231.20 = 804,161.60/x
  3. Step 3: Cross multiply
    836,820.80x = 1,255,231.20 × 804,161.60
  4. Step 4: Simplify right side
    836,820.80x = 1,009,408,730,161.92
  5. Step 5: Solve for x
    x = 1,009,408,730,161.92/836,820.80
  6. Step 6: Final answer
    x = 1,206,242.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.